add a language parameter that is used to select the demangling
algorithm.
* defs.h (enum language): Move further up in file so enum can
be used in prototypes.
* defs.h (fputs_demangled): Update prototype to add lang arg.
* c-typeprint.c (cp_type_print_method_args): Add language arg
to fputs_demangled calls, remove DMGL_PARAMS flag.
* stack.c (print_frame_info): Remove obsolete code so we don't
have to update fputs_demangled usage in it.
* stack.c (print_frame_info, frame_info): Add language variable
to pass to fputs_demangled and initialize it from the symbol's
language. Call fputs_demangled with language arg.
* symtab.c (find_methods): Add language arg to fputs_demangled
call.